4H 



State Horticultural Socict\K 



Those plots having barnyard manure received twenty torts per acre 

 per year. The following shows the results: 



Baskets 

 per acre. 



1884-1891, Inclusive, 

 1884-1893, Inclusive, 

 1887-1891. inclusive, 

 1887-1893, inclusive, 



1884-1891, inclusive, 

 1884-1893, inclusive, 

 1887-1891, inclusive, 

 1887-1893, inclusive, 



1884-1891, inclusive, 

 1884-1893, inclusive, 

 1887-1891, inclusive, 

 1887-1893, inclusive. 



1 . The yield wiOiout manure. 



8 years, average per year 



10 years, average per year 



5 crop years, average per year 



7 crop years, average per year. 



//. Field with complete chemical manure. 



8 years, average per year , 



10 years, average per year 



5 crop years, average per year 



7 crop years, average per year 



[II. Yield with barnyard manure. 



8 years, average per year 



10 years, average per year 



5 crop years, average per year 



7 crop years, average per year 



65.7 



60.3 



105.0 



86.2 



164.2 

 183.4 



262.8 

 262.0 



169.5 

 194.7 

 271.3 



276 8 



It will be observed that the yield was very materially increased 

 by feeding the .trees either with commercial fertilizer or with barnyard 

 manure. The difference between commercial fertilizer and barnyard 

 manure was in this case not material. 



It should be remarked in this connection that the amount of plant 

 food supplied was much larger in the barnyard manure in this particu- 

 lar case than in the commercial fertilizer, indicating that a smaller 

 amount than was given in the form of barnyard manure was sufficient to 

 produce maximum crops. For example, in ten years the fertilized plots 

 received — 



Pounds. 



Nitrogen 



Phosphoric acid. 

 Potash 



2.')0 

 560 

 750 



whereas, the trees receiving barnyard manure were fed a total in ten 

 years of 



Lbs. 



Nitrogen 



Phosphoric acid. 

 Potash 



2,000 

 2,000 

 1,600 



